# Mechanical Engineering - Theory of machines

Exercise : Theory of machines - Section 9
1.
The dedendum circle diameter is equal to (where φ = Pressure angle)
pitch circle dia. x cos φ
addendum circle dia. x cos φ
clearance circle dia. x cos φ
pitch circle dia. x sin φ
Explanation:
No answer description is available. Let's discuss.

2.
The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as
damping factor
damping coefficient
logarithmic decrement
magnification factor
Explanation:
No answer description is available. Let's discuss.

3.
The tractive force is maximum or minimum when the angle of inclination of crank with the line of stroke (θ) is equal to
0° and 90°
90° and 180°
135° and 315°
270° and 360°
Explanation:
No answer description is available. Let's discuss.

4.
A point on a connecting link (excluding end points) of a double slider crank mechanism traces a
straight line path
hyperbolic path
parabolic path
elliptical path